Field Detail

• NULL_RECT

  protected static Rectangle2D NULL_RECT

Constructor Detail

• UpdateTracker

  public UpdateTracker()

Method Detail

• hasChanged

  public boolean hasChanged()

  Tells whether the GVT tree has changed.

• getDirtyAreas

  public List getDirtyAreas()

  Returns the list of dirty areas on GVT.

• getNodeDirtyRegion

  public Rectangle2D getNodeDirtyRegion(GraphicsNode gn,
                               AffineTransform at)

  This returns the dirty region for gn in the coordinate system given by at.

  Parameters:

  gn - Node tree to return dirty region for.

  at - Affine transform to coordinate space to accumulate dirty regions in.

• getNodeDirtyRegion

  public Rectangle2D getNodeDirtyRegion(GraphicsNode gn)

• changeStarted

  public void changeStarted(GraphicsNodeChangeEvent gnce)

  Receives notification of a change to a GraphicsNode.

  Specified by:

  changeStarted in interface GraphicsNodeChangeListener

  Overrides:

  changeStarted in class GraphicsNodeChangeAdapter

  Parameters:

  gnce - The event object describing the GraphicsNode change.

• clear

  public void clear()

  Clears the tracker.